How do you pass tier 4 on Mall Tycoon 3?

I don't know, but I got pretty far with 2 boutiques and 2 pet stores. Then I did 1 toy store and 1 jewelry store. Finally I purchased 1 restaurant. After that I get stuck!! Can somebody PLEASE help me!!

Written by seventh grader. Seriously people!! You have got to play this game more often so you could pass it!! Then you could be a hero to people who love thus game, but can't pass this level!!